#183F49#183F49

#183F49 is a dark, muted cyan. Relative luminance 0.042; OKLCH L 34.4% C 0.047 H 217.3°. Best body text is #FFFFFF at 11.38:1 contrast (WCAG AA passes).

Color values

HEX	#183F49
RGB	rgb(24, 63, 73)
HSL	hsl(192, 51%, 19%)
HSV	hsv(192, 67%, 29%)
CMYK	cmyk(67.1%, 13.7%, 0%, 71.4%)
CIE-LAB	lab(24.42, -10.17, -10.21)
CIE-LCH	lch(24.42, 14.42, 225.10°)
OKLab	oklab(34.44% -0.0373 -0.0284)
OKLCH	oklch(34.44% 0.047 217.3)
XYZ	xyz(3.3563, 4.2299, 6.9416)
Luminance	0.0423 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183F49 #492218

analogous

#18493B #183F49 #182749

triadic

#183F49 #49183F #3F4918

tetradic

#183F49 #3B1849 #492218 #274918

square

#183F49 #3B1849 #492218 #274918

split-complementary

#183F49 #491827 #493B18

monochromatic

#081417 #09171B #183F49 #276777 #368EA5

Accessibility & contrast

On white

11.38

#183F49 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#183F49 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183F49

11.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183F49	#FFFFFF	#000000	##FFFFFF
##183F49	1.00	11.38	1.85	11.38
#FFFFFF	11.38	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#383D4A

Deuteranopia (green-blind)

#313849

Tritanopia (blue-blind)

#004342

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #183f49;
/* rgb */ color: rgb(24, 63, 73);
/* oklch */ color: oklch(34.4% 0.047 217.3);

Tailwind

colors: {
  custom: {
    50: '#5b747b',
    500: '#183f49',
    950: '#000000',
  },
}

SCSS

$custom: #183f49;
$custom-light: #5b747b;
$custom-dark: #000000;

JSON

{
  "hex": "#183f49",
  "rgb": {
    "r": 24,
    "g": 63,
    "b": 73
  },
  "hsl": {
    "h": 192.245,
    "s": 50.515,
    "l": 19.02
  },
  "oklch": {
    "l": 0.34439,
    "c": 0.04685,
    "h": 217.3
  },
  "luminance": 0.0423
}

Semantic roles & 50–950 ramp

primary

#183F49

secondary

#804B3D

accent

#6A4EDA

background

#F5F7F7

surface

#E9EDEE

border

#C5C8C9

text

#040809

muted

#797B7B

Preview Lab

Preview with #183F49

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →